[幾何] 三角形面積最大值
算不出來...
給定任意三圓兩兩外切 半徑為r1, r2, r3
三圓上分別有一點A, B, C
求ABC的最大值
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可以先設 r1 = 1, r2 = 2, r3 = 3 就好
光這個也算不出來(攤手)
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